488 BULLETIN UNITED STATES GEOLOGICAL SURVEY. 



along tlie inner side, free only at the apex, whicli has a fine- 

 pointed spine at the inner angle ; they are small and short, seen 

 from in front slightly tapering toward the broadly truncated apex, seen 

 in iwofile conical. They are not half as long again as broad at the base, 

 and their length does not equal half the height of the clypeus ; near 

 the base, in front, they are armed with a very long and strong spine 

 directed forward and somewhat downward, and curved downward at the 

 apex. The claw is slender, but slightly curved, as long as the mandible 

 is broad at the apex. Mamillce narrow, longish, dilated at the base, 

 inclined toward the labium, which is triangular, rather broader than 

 long, slightly rounded at the sides. Pal])i very thick, bat slender at the 

 base. The femoral joint is strongly thickened at the apex, clavate, the 

 patellar joint, which has a few long straight black hairs at the very apex 

 above, is very short, appearing, seen from the side, to form a wedge 

 between the femoral and tibial joints ; this latter is, seen from above, 

 somewhat longer than broad and subcylindrical, seen from the side much 

 shorter below ; the tarsal joint again is very short, as short as the patellar? 

 and is on the underside drawn out into a downward directed, very long, 

 straight, narrow, blunt process, or spine, closely applied along the bnlb 

 and its beak; the bulbus, which forms the extremity of the palpus, is 

 very simple, thick, nearly ovate, with the' extremity drawn out into a 

 strong, rather long, compressed beak, somewhat tapering toward the 

 oblique and blunt apex, which appears to be provided with a few minute 

 teeth, or spines. Legs very slender, long, the first pair (which are muti- 

 lated in the only specimen examined) no doubt the longest, second and 

 fourth pairs nearly equal ; the patellae very short. The ungaicalar article 

 of the tarsi is not very distinct except in the third pair of legs, the tarsi 

 of which, except at the base, are divided into 10-12 short joints; also in 

 the other tarsi there appear to be traces of segmentation. The superior 

 claws are long, equably curved, densely beset with long comb-teeth ; the 

 inferior claw is small, with one tooth. Abdomen, seen from above, a little 

 longer than broad, seen from the side about as high as long, globoso- 

 pyriform, with the mamill^ placed near the middle of the belly. 



Color. — Geplialotliorax pale testaceous, with a somewhat unequal black 

 band along the middle of the pars thoracica, which band is forked in 

 front, here inclosing the hind extremity of the pars cephalica. The eyes 

 are surrounded by a narrow black ring. The sternum (with the coxa?) is 

 of a whitish testaceoas color. The warfe 0/ the mouth are pale testaceous, 

 the legs of the same color, black-haired. The abdomen is grayish-white, 

 with two rows of rather large rounded black spots along the back; the 

 space between these rows has a whitish band, or line, along the middle, 

 •which in front includes a darker, somewhat lanceolate baud ; also the 

 sides of the abdomen are black-spotted. 



Length of body 2^, of cephalothorax 1\ millim. Legs: (I?), II 13^, 

 III 11, IV 13| millim^. (Thighs I 4|, 11 and IV 3} millim.) 



A single male example of this curious spider, which no doubt is identi- 



